【摘 要】
：
利用微波辅助刻蚀法制备了多孔石墨烯筛(MHGO),然后通过简单的高温固相法合成了具有MHGO镶嵌的钛酸锂-多孔石墨烯筛(LTO-MHGO)复合材料.采用X射线衍射仪(XRD)、Raman光谱仪以
【机 构】
：
上海交通大学电子信息与电气工程学院薄膜与微细技术教育部重点实验室,上海200240;上海交通大学电子信息与电气工程学院薄膜与微细技术教育部重点实验室,上海200240;上海交通大学物理与天文学院人工结
论文部分内容阅读
利用微波辅助刻蚀法制备了多孔石墨烯筛(MHGO),然后通过简单的高温固相法合成了具有MHGO镶嵌的钛酸锂-多孔石墨烯筛(LTO-MHGO)复合材料.采用X射线衍射仪(XRD)、Raman光谱仪以及扫描电子显微镜(SEM)等对制备的材料进行成分分析和结构表征.结果 表明,所制备的LTO-MHGO复合材料在5 C(1 C=175 mA/g)倍率的电流密度下具有较好的循环稳定性,循环2000次后仍保持142.6mA·h/g的可逆容量.在20 C倍率的电流密度下,初次放电比容量达到170.2mA· h/g,循环500次后可逆容量仍维持在122 mA·h/g.相比于未掺杂的钛酸锂,所制备的LTO-MHGO倍率性能和长期循环性能得到大幅提升.
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